Railway truck



Oct.6, 1942. D, s, BARRQWS Em 2,297,863

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet l Oct. 6, 1942. n sBARRQWS ETAL 2,297,863

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet 2 1942- D. s. BARROWSETAL 2,297,853

RAILWAY TRUCK Filed Jan. 11, 1940 3 Sheets-Sheet} 1 I I v Z gvwe/wfoaqjl .DONHL a Jfiswmms 62mm! 7? ("000/ Patented a. 6, 1942 RAILWAY TRUCKDonald S. Barrows and Glenn F. Couch, Rochester, N. Y., assignors to TheSymlngton-Gould Corporation, Rochester, N. Y., a corporation of MarylandApplication January 11, 1940, Serial No. 313,447

21 Claims.

This invention pertains to railway trucks.

An object of the invention is the provision of a desired degree offlexibility in a railway truck so that the truck may freely adapt itselfto the irregularities of the rails which it traverses during service.

Another object of the invention is to provide a journal box and sideframe connection which will permit axles of a railway truck to anglehorizontally and in parallelism with respect to the side frames as wellas cant, slope, tilt or angle vertically transversely of the truck. Y

Another object of the invention is the provision in a railway truck ofspring means of different character to form a non-harmonic nest or groupof resilient means interposed between a side frame and journal boxassembl A further object of the invention is to provide means between anassembly comprising a journal box housing, axle and roller bearings andan associated structure so that the assembly may move freelytransversely of the truck of which they form a part.

The above-enumerated objects as well 'as numerous features of theinvention will become apparent from an inspection of the accompanyingdrawings and a perusal of the succeeding detailed description.

Considering the drawings generally wherein there is shown merely as ameans of example and not of limitation one form of the invention:

Figure 1 shows a partial side elevational and a partial verticalsectional view of a portion of a railway truck embodying the presentinvention.

Figure shows a' vertical cross-sectional view taken along the line 2-2of Figure 1; looking in the direction of the arrows.

Figure 3 shows a partial planview and a partial horizontal sectionalview taken along the line 3-3 of Figure 1, looking in the direction ofthe arrows.

Figure '4 shows a horizontal sectional view taken along the line 4-4 ofFigure 1, looking in the direction of the arrows.

Figure 5 is a side view of the journal box of Figure 1 shown inelevation and removed from the associated structure.

Figure 6 is a side elevational view of the yoke shown in Figure Iremoved from the associated structure.

Figure 7 is a diagrammatic plan view of. a railway truck having sideframes thereof in true transverse alignment.

Figure 8 is a diagrammatic plan view of a railtrated and described indetail, it being clearly understood that the undisclosed details thereofmay follow the teachings of the patents of Donald S. Barrows, Nos.2,132,381 to 2,132,385, inelusive, granted October 11, 1938, or anydesired or similar construction. The truck comprises a pair oftransversely spaced side-frames 2 only a portion of one of which isshown in detail in the drawings for the purpose of simplifying thedisclosure. Throughout the major portion of this specification referencewill be made to only one side frame, it being recognized that a railwaytruck includes two sides frames as illustrated in Figures 7 and 8 whichextend longitudinally of and adjacent the transverse limits of thetruck.

The side frame comprises a top chord or compression member 3 extendingth full length of the frame and being made up of a substantiallyhorizontal top web 4 and spaced flanges 5 depending from adjacent thelateral edges thereof. Making up the'remaining portion of the side frameunder immediate consideration is a bottom chord or tension member 6having an end diagonal portion 1 directed from adjacent the central areaof the side frame upwardly toward the associated extremity of thecompression member. The diagonal portion comprises a web 8 havingdownwardly extending spaced flanges 9, adjacent the lateral limits ofthe web, merging with the compression member flanges adjacent to orinwardly from the end of the side frame, to thus continue to thelongitudinal extremity of the side frame as vertically disposedtransversely spaced flanges Ill. At or adjacent the juncture of thetension and compression member flanges the direction of the diagonallydisposed web 8 is altered to extend substantially horizontally towardthe extremity of the side frame as a shelf or ledge II to terminate in avertically disposed rib l2 and function, among other purposes, as anintermediate connecting web joining and reinforcing the frame flanges Ill intermediate the heights thereof. The flanges II). are apertured, asat l3, to form pockets, windows or openings for the accommodation ofassociated structure to be hereinafter described in detail. By the thusformation of the pockets adjacent an end of the side frame the wallspresent jaws l4 which define the horizontal limits or pockets, while theTo carry out the objects of the' invention so that the truck is adaptedfor high speed service and, therefore, capable'of adjusting itselffreely to the irregularities of the rails traversed while in use, theassembly associated with the side frame has been designed particularlyto accommodate axles and journal boxes having roller bearings associatedtherewith. It is, of course, not the present intention to limit theinvention to combinations of instrumentalities including roller bearingassemblies, since arrangements embodying frictionbearings areequallyadaptable to the present construction. One of the purposes ofillustrating roller bearings in combination with the remainingassociated and related details of construction is to point out that,irrespective of the rigidity of the assembly formed by the journal box,roller bearings and axles,

this particular assembly may, as desired, be incorporated in the truckstructure without diminishing the flexibility thereof and come withinthe spirit and scope of the present invention.

Since some axle assemblies, inclusive of axles,

uppermost limits thereof are marked by the ledge journal boxes androller bearings, provide for 2,se7,sas

apart a distance greater than the distance between the top web adjacentportion of the end flanges. The pendants are extended vertically orupwardly through the plane or a distance sub stantially equal to thevertical height of the sloping portions 23, as at 25, so as to presentan appreciabl yoke'bearing area capable of reacting against the sideframe jaws. Formed on the pendants, outwardly thereof, are coaxialconvex surfaces 25 cylindrical in configuration and substantiallycoaxial with the previously described vertical axis of the journal boxand side frame jaw concave surfaces.

Associated with the yoke convex surfaces are correspondingly formed wearplates 21 removably secured to the pendants by any desired method sothat they may be replaced after they have worn toor beyond a permissibledegree. The yoke wear plates are spaced from the jaw wear plates adistance which permits a free movement of the yoke with respect to theside frame and still present confronting cylindrical surfaces forguiding the yoke during service movements to which it will be subjected.By reason of the particularly formed and related concave and convex wearplate surfaces the yoke is arranged or adapted to rotate or anglehorizontally with respect to the side frame, and any transverse orlongitudinal movement of the yoke with respect to the side frame will berestricted by the jaws since the yoke is, in effect, cupped within theside frame pockets. Beginning substantially in the horizontal plane ofthe yoke top web are verments of the axle assemblies in the directionshereinabove indicated.

Toward the accomplishment of the above purposes the jaws H are formedwith arcuate or cylindrical concave surfaces I 5 fa cing inwardly of thepockets I3 all of which are substantially coaxial with respect to oneanother and a vertical line formed by the intersection of a verticalplane passing through the longitudinal axis of the side frame and atransverse vertical plane bisecting the center line of an axle IS. Thevertical line will be designated and referred to hereinafter as avertical axis or the vertical axis of the journalbox. Associated withthe jaws and formed to correspond with the Jaw surfaces I5 are arcuatecylindrical coaxial wear plates l1 removably secured to the jaws by anymanner or means deemed desirable so that after continued use andsubsequent wear beyond a predetermined degree the wear plates may bereplaced in renovating the truck structure.

Positioned within the side frame pocket is a vertically and rotativelymovable adapter casing or yoke l8, generally of inverted U configure -22for the purpose to be hereinafter explained.

When the end flanges reach the proximity of the lower limits of theinner and outer flanges they are directed in a diagonal or slopingfashion away from one another. as at 23, until they approach theassociated related jaws adjacent which they are again directedsubstantially vertically or terminating in pendants 24 spaced ticallydisposed, transversely spaced, longitudinally directed gussets 28 whichoutstand from the yoke side flanges to merge with the portion 2-5 of theyoke pendants and thereby reinforce the entire yoke end flanges againstthrusts imparted thereto during service. Since the yoke flanges andgussets extend through the horizontal plane of the side frame ledge, anaperture 29 is formed in the ledge to accommodate the upper extremity ofthe yoke and sufllcientclearance is provided about the yoke to allow afree unrestricted service movement thereof.

Resilient elements are incorporated in the construction to form a meanswhereby loads are transmitted from the side frame to the axle, and asexemplary of one of the elements which may be herein employed is asemi-elliptic or leaf spring 30 positioned intermediate the frameflanges l0 and having ends thereof bearing against longitudinallyspaced, downwardly facing, spring seats 3| provided on the compressionmember web. The

. top web of the yoke has an upwardly facing opening or recess 32forming a receptacle or 'seat for a band 33 which binds the leaves ofthe sprinB together, and in this manner the spring and yoke are at alltimes maintained in assembled relation.

The construction includes a journal box or axle housing 34 in subjacentsupporting relation with the yoke and may be of any of the well knowntypes. The journal box forms a receptacle, for an extremity of the axlel6 and a set of raceways and antifriction or roller bearings 3! whichare interposed between the axle extremity and the journal box. Aspreviously indicated, any type of roller hearing may be employed, and,if resired, this particular type of bearing may be entirely dispensedwith and have substituted in lieu thereof a friction bearing and theusual accommodating associated elements.

The journal box is arranged to move transversely of the truck withrespect to the side frame so as to provide for a lateral motion of thejournal box, axle and roller bearings, hereinafter termed or referred toas the axle assembly, and thereby allow the assembly to lend itselfwithin certain limits to positions to which it may be urged duringservice. Toward the accomplishment of the preceding recitals, the topwall of the journ-albox is formed withan upwardly facing recess 38accommodating a bearing plate 31, whilethe under portion of the yoke topweb is similarly provided with a downwardly facing recess 48 which, inlike manner, is occupied by a yoke bearing plate 39. Interposed betweenand in intimate contact with confronting arcuately disposed or concavesurfaces 40 on the box and yoke bearing plates so that, when the' springassembly or nest adjacent one end of the side frame is compressed agreater degree than the spring group at the corresponding extremity ofthe side frame adjacent the other side of the truck or when oneextremity of an axle drops below the horizontal position of the otherextremity, and as a result thereof the entire axle assembly cants,slopes or tilts transversely of the truck, the roller element above eachjournal box will still remain in constant contact with the bearingplates between which it is positioned. It will be readily seen, were aplurality of roller elements substituted for the single illustratedelement and arranged adjacent one another transversely of the truck,that a transverse vertical angling of the axle assembly may result ineither the inbound or outbound roller element being relieved of stresseswith all of the forces being carried by the other roller element. Thispossible release of one of the roller elements may also result in itsbeing displaced accidentally from its normal or predetermined position.It is, therefore, deemed advisable to employ but a single roller elementabove each journal box to accomplish the purpose intended.

Since the journal box is adapted to move transversely relative to theside frame and associated yoke, means has been provided to guide thejournal box throughout the entire range of such a movement, and to thisend the inner sides 42 of the yoke arms and particularly the pendantportions thereof are provided with plane substantially vertical,transversely disposed, inwardly facing surfaces 43 which havecorrespondingly formed wear plates 44 secured thereto in any preferredmanner.

Similarly, the journal box carries oppositely facing plane surfaces 45disposed in spaced, substantially parallel relation with the yokesurfaces 43. The journal box has the sides thereof bifurcated, as at 48,to present upstanding shoulders 41 projecting above the extendedtransverse plane of the yoke flange diagonal portions 23, and thereby agreater area of the journal box reacts against the yoke side flanges;Wear plates 48 are removably secured to the journal box plane surfacesin any approved manner to lie adjacent but spaced from the yoke wearplates 44; the

clearance between the associated plates 44 and 48 being determinative ofthe permissible or predetermined longitudinal movement of the journalbox with respect to the side frame and yoke. The plates 44 and 48 notonly present wear surfaces to guide the journal box in its movementtransversely of the truck, but they also form abutments to limit thelongitudinal movement of the journal box.

It has also been thought advisable to have the journal box guidinglyengage the side frame during certain horizontal angling movements of thejournal box, and to carry this thought forward the journal box has,adjacent its lower extremities, longitudinally and transversely spacedoutstanding arms or ribs 49 which are on each side of the journal boxdirected toward one another inwardly of the side frame. The arms haveouter cylindrical convex surfaces 50 thereon which are spaced from andsubstantially coaxial with respect to the vertical axis of the journalbox and the inwardly facing jaw carrying wear plate coaxial surfaces.The arm surfaces 50 are, therefore, in or adapted to be shifted to aposition in vertical alignment with the correspondingly formed surfaceson the yoke arcuate plates. The distance in which the surfaces 50 arespaced from the associated and correspondingly formed jaw carryingsurfaces is substantially cue] to the permissible transverse movement ofthe journal box relative 'to the side frame; that is to say, when thejoumal box moves outwardly of the truck from its normal .position,reference being made particularly to Figure 4 of the drawings, the armson each side of the transverse center line of the journal box outwardlyof the journal box willhave their surfaces engaged by the associated jawcarrying surfaces to guide the journal'box vertically or in a horizontalangular direction. The same thing is true of the surfaces 50 carried bythe other arms formed on each side of the journal box upon a transversemovement of the journal box inwardly of the truck. Also, the distancebetween the surfaces 50 and the correspondingly formed jaw carryingsurfaces is substantially equal to the sums of the distances between thewear plates 48 and 44 and the arcuate wear plates 21 and I1, and byreason of this arrangement when the longitudinal and transversehorizontal clearance is taken up between the journal box, yokeand jawconfronting surfaces, the surfaces 50 on one side of the longitudinalaxis of the side frame will,'together with the surfaces on the yoke wearplates 21 on one side of the transverse vertical plane of the journalbox, all function to guide the journal box substantially about itsvertical axis upon a horizontal angling movement of the journal box.

Outstanding from the sides of the journal box, extending longitudinallyin a direction away from one another, are brackets 5| positionedadjacent to and joining the lower extremities of the joura nal box arms49 to be reinforced against superimposed loads by means of underlyingdepending ribs 5| which are spaced transversely of the journal box andextend for the entire length thereof.

In order to assist the semi-elliptic spring in supporting the side framethere are, in substance,- spring units 52, such as those shown andclaimed in Patent No. 2,132,387, granted October 11, 1938, to Donald S.Barrows, interposed between the journal box brackets 5| and the overying portions of the side frame shelf II. The spring units comprise acoil or helical spring 53 having associated with each end thereof a capor spring plate 54, the latter of which have outer cylindrical surfacesbearing against the top surface of the journal box brackets and anundersurfac-e of the side frame shelf. These cylindrical surfaces formadjusting means to permit the units to rock or roll about their verticalaxes a the brackets move rotatlvely upon a horizontal angling movementof the journal box. Suitablestuds 55 are formed on the spring caps toproject into apertures 58 in the side frame shelf and journal boxbrackets, respectively, and by reason of this arrangement the springunits are maintained in apredetermined position.

It will be noted that the nest or group of springs employed in the,present embodiment of the invention comprises a semi-elliptic springsupporting the side frame from the yoke and longitudinally spaced coilor helical springs carryin the side frame from the journal box bracketsto form a non-harmonic assembly or association of springs. It will, ofcourse, be clearly understood that, if desired, the springs may bereplaced with resilient units of a character different from thatillustrated.

So as to prevent an unwarranted or excessive downward movement of thejournal box and associated structure relative to the side frame, theside frame flanges i terminate in a plane spaced below the journal boxbrackets in suitably apertured lugs 51 spaced on either side of thevertical center line of the axle and transversely of the side framelongitudinal axis. Extending between or connecting the lugs are bolts orpins 58 of any form which underlie the journal box brackets to formlimiting means or stops for arresting movement of the journal box beyonda predetermined position.

As previously stated, the disclosed and described structure is merelyillustrative of the present invention, and for the scope of theinvention reference is made to the appended claims.

We claim:

1. In a railway truck, in combination, a side frame having spring seatsand depending jaws adjacent an end thereof, longitudinally andtransversely spaced coaxial concave surfaces formed on said jaws, avertically movable yoke having a, top web and depending side arms,coaxial convex surfaces on said side arms adjacent and adapted to engagesaid jaw surfaces so as to provide for substantially constant bearingbetween said arms and jaws during a. horizontal angling movement of saidyoke with respect to said truck, a vertically movable journal boxdisposed between said arms and adapted to move transversely of saidtruck therebetween, spring seats formed on said journal box, springmeans interposed between said journal box and side frame spring seats,and anti-friction means interposed between said yoke top web and journalbox.

2. In a railway truck, in combination, a side frame having spring seatsand depending jaws adjacent an end thereof, longitudinally andtransversely spaced coaxial concave surfaces formed on said jaws, avertically movable yoke having a top web and depending side arms, saidside arms being provided with coaxial convex surface adapted to engagesaid jaw surfaces so as to provide for a horizontal angling movement ofsaid yoke with respect to said side frame, a journal box movablevertically with respect to said side frame and being interposed betweensaid yoke arms to be capable of movement transversely of said trucktherebetween, spring seats formed on said journal box and yoke web,spring means reacting against said side frame spring seats and saidjournal box and yoke spring seats,

anti-friction means interposed between said yoke top web and journalbox, and convex surfaces on said journal box spaced from the verticallyextended plane of said arm convex surfaces and arranged to engage saidjaw surfaces.

3. In a railway truck, in combination, a side frame having dependingjaws adjacent an end thereof, longitudinally and transversely spacedcoaxial concave surfaces formed on said jaws, a yoke having a topweb anddepending side arms, said side arms being provided with outer coaxialconvex surfaces adapted to engage said jaw surfaces so that said yokemay angle horizontally with respect to said side frame, inner planesurfaces on said arms, a journal box interposed between said arms andhaving plane side walls positioned adjacent said arm inner surfaces, anda roller element interposed between said journal box and yoke web; saidjournal box being capable of angling horizontally with respect to saidside frame and moving transversely of said truck relative to said sideframe and yoke.

4. In a railway truck, in combination, a side frame having dependingjaws adjacent an end thereof, longitudinally spaced coaxial concavebearing plate surfaces so that said journal box may move freelytransversely of said truck.

5. In a railway truck, in combination, a side frame having spring seatsand depending jaws I adjacent an end thereof, longitudinally andtransversely spaced coaxial concave surfaces formed on said jaws, averticallymovable yoke having a top web and depending side arms, aspring seat on said top web, spring means bearing upon said yoke andside frame spring seats, said side arms being provided with outercoaxial convex surfaces adapted to engage said jaw surfaces so that saidyoke may angle horizontally with respect to said side frame, inner planesurfaces on said arms, a vertically movable journal box interposedbetween said arms and having plane side walls positioned adjacent saidarm inner surfaces, and a single roller element positioned between saidjournal box and yoke web; said journal box being capable of anglinghorizontally with respect to said side frame and moving transversely ofsaid truck relative to said side frame and yoke.

6. In a railway truck, in combination, a side frame having jawsdepending from adjacent one end thereof, inwardly facing coaxial concavesurfaces on said jaws, a rotatively movable yoke formed by asubstantially horizontal web and spaced vertically disposed dependingside arms,

said yoke reacting vertically against said side frame, outer cylindricalsurfaces on said arms arranged to correspond with and engage said jawsurfaces, inner plane surfaces on said arms, a journal box interposedbetween said arms, outer plane surfaces on side walls of said journalbox adapted to engage said arm plane surfaces, an axle in said journalbox, roller hearings interposed between said axle and journal box, and

roller means between said journal and yoke web so that said journal boxmay move transversely of said truck relative to said side frame andyoke.

7. In a railway truck, in combination, a side frame having jawsdepending from adjacent one end thereof, spring seats formed on saidside frame, inwardly facing coaxial concave surfaces on said jaws,avertically and rotatively movable yoke formed by a substantiallyhorizontal web and spaced vertically disposed depending side arms,spring means between said yoke web and side frame spring seats, outercylindrical surfaces on said arms arranged to correspond with and engagesaid jaw surfaces, inner plane surfaces on said arms, a journal boxinterposed between said arms adapted to move vertically with said yoke,outer plane surfaces on side walls of said journal box adapted to engagesaid arm plane surfaces, an axle in said journal box, roller bearingsinterposed between said axle and journal box, and roller means betweensaid journal and yoke web so that said journal box may move transverselyof said truck relative to said side frame and yoke.

8. In a railway truck, in combination, spaced side frames each havingjaws depending from adjacent the ends thereof to form pockets, coaxialconcave surfaces on said jaws facing inwardly of said pockets, arotatively movable yoke positioned in each pocket having a web reactingagainst an associated side frame and depending arms provided with outersurfaces positioned adjacent to and coaxial with associated jaw surfacesto permit said rotative movement, inner plane surfaces on said arms,journal boxes between said yoke arms and having plane outer surfacesadjacent to said yoke plane surfaces, said journal boxes being adaptedto move transversely of said truck relative to said side frames andyokes, axles extending between said side frames and into journal boxes,roller bearings interposed between said axles and journal boxes, saidjournal boxes, roller bearings and axles adapted to move transversely ofsaid truck and to angle horizontally with respect to said side frames asassemblies, and a roller element interposed between each journal box andrelated yoke web; said roller elements remaining at all times in bearingrelation with said journal boxes and yoke .webs irrespective of theposition of said axles relative to said side frames.

9. In a yoke adapted for use with an extremity of a side frame, thecombination of, a web, inner and outer flanges depending from said webend flanges joining said inner and outer flanges to form a housingtherebetween, a downwardly facing recess on said web, a bearing plate insaid recess having a single arcuate bearing surface, and pendantsforming extremities of said end flanges; said pendants having outercylindrical coaxial convex surfaces for engagement with correspondinglyformed surfaces carried by said side frame for allowing said yoke toangle horizontally with respect to said side frame.

10. In a yoke adapted for use with an extremity of a side frame, thecombination of, a web, transversely spaced side flanges depending fromsaid web, end arms extending downwardly from said web and joining saidside flanges to forma housing therebetween, a downwardly facingv arcuatesurface carried by said web within said housing, portions of said endarms being tapered outwardly and downwardly to terminate insubstantially vertical pendants, and cylindrical substantially coaxialwear plates carried by said pendants to permit said yoke to anglehorizontal-' 1y with respect to said side frame.

11. In a yoke adapted for use with an extremity of a side frame, thecombination of, a web,

, transversely spaced side flanges depending from said web, end armsextending downwardly from said web and joining said side flanges to forma housing therebetween, a downwardly facingv arcuate surface carried bysaid web within said housing, portions of said end arms being taperedoutwardly and downwardly to terminate in substantially. verticalpendants, outer cylindrical substantially coaxial surfaces carried bysaid pendants to permit said yoke to angle horizontally with respect tosaid side frame, and inner plane substantially vertical surfaces carriedby said pendants to present guiding surfaces for a transversely movablejournal box.

12. In a railway truck, in combination, spaced side frames each havingjaws depending from adjacent ends thereof to form pockets, journal boxesin said pockets, concave surfaces on said jaws and substantially coaxialwith the vertical axes of said journal boxes, means interposed betweensaid journal boxes and jaws, convex surfaces on said means substantiallycoaxial with and adapted to engage said concave surfaces, convexsurfaces on said journal boxes spaced from the vertically extendedplanes of said means surfaces and being adapted to engage said jawsurfaces, axles extending between said side frames and having theirextremities housed in said journal boxes, roller bearings interposedbetween said axle extremities and journal boxes to form therewithsubstantially rigid assemblies,

said assemblies, by reason of said concave and convex surfaces, beingadapted. to move in parallelism and to angle horizontally with respectto said side frames.

13. In a yoke adapted for use witha side frame.

' vthe combination of a web, a downwardly facing arc'uate surfacecarried by said web, end arms depending from said web, portions of saidand arms being substantially vertical and having substantially coaxialwear surfaces adapted to engage correspondingly formed surfaces on saidside frame to permit said yoke to angle horizontally with respect tosaid side frame, and plane vertically disposed surfaces on said arms topresent guiding surfaces for a transversely movable journal box.

14. In a journal box adapted for use with non friction bearings to forma substantially rigid assembly, the combination of a top wall,horizontally spaced side walls depending from said top wall, armsoutstanding from said side walls, outwardly facing convex surfaces .onsaid arms spaced from and substantially coaxial with respect tocorrespondingly formed surfaces on an associated side frame, said convexsurfaces being adapted to engage said correspondingly formed side framesurfaces, and vertical transversely extending plane surfaces on saidside walls adjacent said arms for guiding said journal box during atransverse movement thereof.

15. In a journal box adapted for use with nonfriction bearings to form asubstantially rigid assembly, the combination of a top wall,horizontally spaced side walls depending from said top wall, bracketsforming spring seats outstanding from said side walls, arms outstandingfrom said side walls on each side of said brackets and having theirlower extremities merging into said brackets, convex surfaces on saidarms substantially coaxial with respect to a vertical axis of saidjournal box and spaced from correspondingly formed surfaces on anassociatedv side frame to permit a horizontal rotative movement of saidjournal box relative to said side frame, and vertical transverselydisposed plane surfaces on said side walls above said arms for guidingsaid journal box during a transverse movement thereof.

16. In a journ'al box adapted for use with nonfriction bearings to forma substantially rigid assembly, the combination of a top wall, a concaveupwardly facing surface carried by said top wall to accommodate amovable element interposed between said journal box and an associatedelement, horizontally spaced side walls depending from said top wall,brackets forming spring seats outstanding from said side walls,transversely and longitudinally spaced arms outstanding from said sidewalls and having their lower extremities merging with said brackets,convex surfaces on said arms spaced fromand substantially coaxial withrespect to correspondingly formed surfaces on an associated side frameto permit a horizontal rotative movement of said journal box relative tosaid side frame, and wear plates secured to said side walls above saidarms and having vertical transversely disposed plane surfaces forguiding said journal box during a transverse movement thereof.

17. In a railway truck, the combination of a side frame having dependingjaws adjacent an end thereof, coaxial concave cylindrical surfaces onsaid jaws, a yoke disposed between said jaws and reacting against aportion of said side frame thereabove, said yoke having outer convexsurfaces coaxial with respect to and adapted to engage said side frameconcave surfaces to facilitate a horizontal rotative movement of saidyoke relative to said side frame, inner Diane vertical surfaces on saidyoke disposed transversely of said truck, a journal box partiallyembraced. by

said yoke, movable means interposed between 1 said journal box and yoketo facilitate a movement of said journal box transversely of said truck,outer plane vertical surfaces on said journal box adapted to contactsaid yoke plane surfaces, and convex surfaces on said journal box belowsaid journal box plane surfaces, said journal box convex surfaces beingspaced inwardly of said journal box from an extended plane of said yokeconvex surfaces and substantially coaxial with respect to said sideframe concave surfaces for engagement with the latter.

18. In a railway truck, in combination, spaced side frames each havingspaced jaws depending from adjacent ends thereof to form pockets,journal boxes in said pockets, concave surfaces on said jaws andsubstantially coaxial with the vertical axes of said journal boxes,means interposed between said journal boxes and jaws, convex surfaces onsaid means substantially coaxial .with and adapted to engage associatedconcave surfaces, convex surfaces on said journal boxes spaced inwardlyof said journal boxes from the side frames, axles extending between saidside frames and having their extremities housed in said journal boxes,and roller bearings interposed between axle extremities and journalboxes to form therewith rigid assemblies; said assemblies, by reason ofsaid concave and convex surfaces, being adapted to move in parallelismand angle horizontally with respect to said side frames.

19. In a railway truck, the combination of a side frame having jawsdepending from adjacent one end thereof, coaxial concave cylindricalsurfaces carried by said jaws. a yoke disposed between said jaws,coaxial convex cylindrical surfaces carried by said yoke and adapted toengage said concave jaw surfaces, a journal box partially embraced bysaid yoke, coaxial convex surfaces on said journal box in substantialvertical alignment with said yoke convex surfaces and adapted to engagesaid jaw concave surfaces, said yoke and journal box being adapted toangle horizontally relative to said side frame, and spring meansinterposed between said journal box and I said side frame.

20. In a railway truck, the combination of a side frame having jawsdepending from adjacent one end thereof, a yoke disposed between saidjaws, spring means interposed between said yoke and side frame, ajournal box positioned within said yoke, means outstanding from saidjournal box below said yoke, movable means between said yoke and journalbox for permitting said journal box to move transversely of said truckrelative to said side frame and yoke, vertical surfaces carried by saidjournal box and yoke for guiding said journal box throughout itspermissible transverse movement, spring seats on said side framesubstantially in the horizontal plane of said movable means, and springmeans interposed between said journal box outstanding means and sideframe spring seats.

21. In a railway truck, the combination of a side frame having jawsdepending from adjacent one end thereof, journal box means positionedwithin and spaced from said jaws, an axle extending into said journalbox means, anti-friction elements interposed between said journal boxmeans and axle, separable means interposed between said journal boxmeans and side frame, said last-named means and journal box means beingarranged and constructed to move horizontally about a vertical axisrelative to said side frame, said journal box means being adapted tomove transversely of said truck relative to said interposed means, saidinterposed means being provided with cylindrical guide surfaces adaptedto engage coaxial surfaces carried by said jaws, one of said means beingadapted to engage said side frame to limit said horizontal movement.

DONALD S. BARROWS. GLENN F. COUCH.

